The early versions of TEM were primarily developed at MBL and applied to South America, North America and the globe. As postdoctoral and graduate students associated with TEM continued their careers, the MBL TEM subgroup has collaborated with many of these researchers to examine issues affecting terrestrial biogeochemistry including climate change and variability, CO2 fertilization, ozone pollution, land-use change, wildfires, and atmospheric nitrogen deposition. In addition, the MBL subgroup has helped to incorporate TEM into global and regional earth system models to examine how climate, energy and economic policies may influence terrestrial biogeochemistry and how changes in terrestrial biogeochemistry may feedback to affect future climate and land use.